.top{
    background: black;
    line-height: 40px;
    text-align: right;
    font-size: 20px;
}
.top a{
    color: white;
}
a:hover{
    color: red;
}
a{
    text-decoration: none;
    color: black;
}
.mav{
    line-height: 40px;
}
.left{
    width: 25%;
    float: left;
    /*height: 500px;*/
    text-align: center;

}
.left img{
    width: 38px;
    height: 38px;
}
.left span{
    vertical-align: 50%;
}
.center{
    width: 50%;
    float: left;
    /*height: 500px;*/
}
.right{
    width: 25%;
    float: left;
    /*height: 500px;*/
}
.floot{

    clear: both;
    text-align: center;
    background: blue;
}
